Curry paste recipe here. Combine with coconut milk, a little vegetable broth, fish sauce, sesame oil and soy sauce. Simmer for a few minutes, then add in bok choy. Cut the fish into decent sized cubes and gently lay them into the pan. Cook with the lid on - the fish cooked like less than 3 minutes so keep a close eye on it! Serve with rice, mint, cilantro and a squeeze of lime.